Triceps

From last weeks Ecorche class..."The Triceps"

• The primary function of the triceps is to extend the elbow, which results in straightening the arm. 
• The secondary function of the triceps is fulfilled only by the long head of the muscle, which is to adduct the arm (or to bring the arm down towards the body). The triceps shares this function with the latissimus dorsi (back muscles).

Interesting to note the placement of the Long Head and how it traverses the medial and lateral heads. On flexion it bulges out prominently at the tricep tendon sheath- a flat band of tendon that angles from the elbow up and lateraly. Check it out.